24,25-Dihydroxyvitamin D 3Vitamin DDihydroxycholecalciferolsCalcifediolCalcitriolHydroxycholecalciferolsVitamin D-Binding ProteinCholecalciferolVitamin D Deficiency25-Hydroxyvitamin D 2Ergocalciferols25-Hydroxyvitamin D3 1-alpha-HydroxylaseReceptors, CalcitriolParathyroid HormoneRicketsOsteomalaciaVitamin ASteroid HydroxylasesVitaminsBone and BonesVitamin ECholestanetriol 26-MonooxygenasePhosphorusCalcium, DietaryParathyroid GlandsCalciumVitamin B 12Dietary SupplementsHypercalcemiaVitamin A DeficiencyIntestinal AbsorptionCalcitoninChromatography, High Pressure LiquidChromatography, LiquidSeasonsPhosphatesBone DensityAlkaline PhosphataseChickensVitamin K 1SunlightVitamin B 6Vitamin E DeficiencyVitamin B 12 DeficiencyTime FactorsVitamin K DeficiencyRNA, MessengerVitamin B 6 DeficiencyVitamin D Response ElementAscorbic AcidDietBiotransformationVitamin K 2PyridoxineNutritional StatusBone Density Conservation AgentsAvitaminosisGas Chromatography-Mass SpectrometryNutritional RequirementsHydroxylationMetabolomicsAntioxidantsFood, FortifiedVitamin B DeficiencyMetabolomeDose-Response Relationship, DrugHypocalcemiaVitamin K 3Cytochrome P-450 Enzyme SystemMass SpectrometryFolic AcidHyperparathyroidism, SecondaryAdministration, OralLiverMagnetic Resonance SpectroscopyNutrition PolicyMicrosomes, LiverRisk FactorsBiological MarkersOsteoporosisalpha-TocopherolVitamin K Deficiency BleedingDouble-Blind Methodbeta CaroteneTandem Mass SpectrometrySkin PigmentationPregnancy